26238807497 has 4 divisors (see below), whose sum is σ = 29987208576. Its totient is φ = 22490406420.

The previous prime is 26238807481. The next prime is 26238807503. The reversal of 26238807497 is 79470883262.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26238807497 - 2⁴ = 26238807481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26238707497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1874200529 + ... + 1874200542.

It is an arithmetic number, because the mean of its divisors is an integer number (7496802144).

Almost surely, 2^26238807497 is an apocalyptic number.

It is an amenable number.

26238807497 is a deficient number, since it is larger than the sum of its proper divisors (3748401079).

26238807497 is an equidigital number, since it uses as much as digits as its factorization.

26238807497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3748401078.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 26238807497 in words is "twenty-six billion, two hundred thirty-eight million, eight hundred seven thousand, four hundred ninety-seven".